Rockwell Automation 1771-IS 5V DC INPUT MOD - Manual (Page 9)

Module Preparation, Wiring, and
Installation
Chapter 2
2-2
Figure 2.1
Mode Selection Dip Switch
1
ON Always OFF
2
ON 16–Bit Data
3
ON Fast
4
ON Momentary (Latched) Contact Mode
5
ON
Always OFF
6
ON
Always OFF
7
ON Program Initiated Reset
ON
OFF
ON
OFF
ON
OFF
O
O
1 2 3 4 5 6 7
10362
OFF
OFF
OFF
OFF
OFF
OFF
OFF
12–Bit Data
Normal
Maintained Contact Mode
Automatic Reset
N
F
F
Switch #1 - Always OFF.
Switch #2 - 16 Bit Storage/12 Bit Storage, Select 12-bit storage when
using 3-digit BCD thumbwheel switches. Select 16-bit storage when
using 4-digit BCD thumbwheel switches, discrete momentary contact
switches, or discrete maintained contact switches. (ON for 16-bit storage,
OFF for 12-bit storage.)
Switch #3 - Normal Scan/Fast Scan. The module scan is independent of
the processor scan and is generally set at the normal (15.3 msec) position.
The fast scan (5.1 msec) can be used when operating in either the